Home Basics of E-Juice Enjoyment What is Vegetable Glycerin and Propylene Glycol?

What is Vegetable Glycerin and Propylene Glycol?


E-liquids consist of four main ingredients;  vegetable glycerin (VG), propylene glycol (PG), nicotine, and flavorings.  Vegetable glycerin and propylene glycol are essential for a number of reasons.

Vegetable glycerin (VG)

Vegetable glycerin is a clear liquid that is odorless, sweet, and nontoxic. It is derived from plants such as coconut oil, soy, or palm oil. In e-liquids, vegetable glycerin is often used to produce thick vapor. It is a lot smoother and gives you a mild throat hit. E-liquids with a MAX VG ratio are perfect for vaping with a sub ohm tank or dripper.

Vegetable glycerin (VG) is quite thick. It has a slow absorption rate for the wicks. It also is more likely to gunk up coils, especially if the vape juice is very sweet. In very high concentration, it can affect the overall flavor. Vegetable glycerin is naturally sweet. Hence it can make an e-juice taste sweet.

Vegetable glycerin is also quite smooth. In high concentration, it gives a smooth throat hit or weakens the effect of the nicotine on the throat. One of the main effects of vegetable glycerin is that it increases vapor production. Thi is the reason why MAX VG e-liquids are preferred by cloud chasers.

Propylene Glycol (PG)

Propylene glycol is a petroleum by-product. It is odorless and colorless, and less viscous than vegetable glycerin. Propylene glycol in e-cig juice increases the flavor intensity. It also provides a stronger throat hit. E-liquids with a high concentration of propylene glycol have a thinner consistency. They are also less likely to gunk up coils.

Propylene glycol doesn’t affect the taste of e-liquid.

Vegetable Glycerine and Propylene Glycol Concentration in Ejuice

The two liquids, vegetable glycerin and propylene glycol, are introduced in e-liquids in a ratio – either of equal proportion or with one in higher quantity than the other.

  • Equal proportion 50% vegetable glycerin (VG) and 50% propylene glycol (PG). In this case, there is an equal amount of both substances is equal. It’s often a good starting point for vaping. You often get a good cloud production along with a gentle throat hit.
  • E-liquids with a higher percentage concentration of vegetable glycerin than propylene glycol (60%VG/40%PG; 70%VG/30%PG; 80%VG/20%PG; 90%VG/10%PG; Max 100%VG).  The VG percentage chosen depend of a few factors.  For instance, a MAX VG e-juice with 100% vegetable glycerin is often chosen for two reasons – an allergy to PG or for cloud chasing competitions. There is almost no throat hit and the sweet taste of the VG often alters other flavors, especially if the flavoring is not sweet naturally.

An e-liquid with 90% or 80% VG also has very little throat hit and abundant vapour production. The vegetable glycerin sweetness starts to affect the flavor at this level.

E-liquids with 70% or 60% VG are very popular on the market. You still get very good cloud production and a little throat hit. The flavor is at an acceptable level and does not feel overpowering.

  • E-liquids with a higher percentage concentration of propylene glycol (60%PG/40%PG; 70%PG/30%VG; 80%PG/20%VG; 90%PG/10%VG; Max 100%PG). 100% PG used to be quite common, but are no longer popular. MAX PG e-liquids offer a strong throat hit and great flavor.

E-liquids with 90% or 80% PG have good flavor, and also excellent throat hit. But the vapor production may not be so good.

E-liquids with 70% or 60 % PG also give more emphasis to flavor, but you also have a higher vapor production and a smoother throat hit.


Whether you choose a MAX VG or a MAX PG e-liquid depends on your personal preference and whether you’re a cloud chaser or a flavor chaser. The underlying goal is to have a very good vaping experience.